Powell Industries gets a charge out of making equipment and computer systems that monitor and control the flow of electricity in industrial, commercial, and government facilities. Products include switchgears (units that manage the flow of electricity to motors, transformers, and other equipment); bus ducts (insulated power conductors housed in a metal enclosure); process control systems for instrumentation, computer control, and communications; and data management systems. Powell sells to oil and gas producers and pipelines, refineries, utilities, paper mills, petrochemical plants, and transportation companies, among other customers. More than three-quarters of sales come from the US.